advanpix: Multiprecision Computing Toolbox for MATLAB. The Multiprecision Computing Toolbox is the MATLAB extension for computing with arbitrary precision. The toolbox equips MATLAB with a new multiple precision floating-point numeric type and extensive set of mathematical functions that are capable of computing with arbitrary precision. The multiprecision numbers and matrices can be seamlessly used in place of the built-in double entities following standard MATLAB syntax rules. As a result, existing MATLAB programs can be converted to run with arbitrary precision with no (or minimal) changes to source code. Quadruple precision computations (compliant with IEEE 754-2008) are supported as a special case.